Re: [PATCH] Remove fclk check for cpuidle

[Kevin Hilman <khilman@deeprootsystems.com>]

"Peter 'p2' De Schrijver" <peter.de-schrijver@nokia.com> writes:

> This patch removes the check to see if some functional clocks are still
> enabled before entering sleep. 
>
> Signed-off-by: Peter 'p2' De Schrijver <peter.de-schrijver@nokia.com>

Thanks, pushing along with updated C1 patch.

Kevin

> ---
>  arch/arm/mach-omap2/pm34xx.c |   46 ------------------------------------------
>  1 files changed, 0 insertions(+), 46 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
> index e12ff2a..008a4d2 100644
> --- a/arch/arm/mach-omap2/pm34xx.c
> +++ b/arch/arm/mach-omap2/pm34xx.c
> @@ -453,58 +453,12 @@ void omap_sram_idle(void)
>  	omap2_clkdm_allow_idle(mpu_pwrdm->pwrdm_clkdms[0]);
>  }
>  
> -/*
> - * Check if functional clocks are enabled before entering
> - * sleep. This function could be behind CONFIG_PM_DEBUG
> - * when all drivers are configuring their sysconfig registers
> - * properly and using their clocks properly.
> - */
> -static int omap3_fclks_active(void)
> -{
> -	u32 fck_core1 = 0, fck_core3 = 0, fck_sgx = 0, fck_dss = 0,
> -		fck_cam = 0, fck_per = 0, fck_usbhost = 0;
> -
> -	fck_core1 = cm_read_mod_reg(CORE_MOD,
> -				    CM_FCLKEN1);
> -	if (omap_rev() > OMAP3430_REV_ES1_0) {
> -		fck_core3 = cm_read_mod_reg(CORE_MOD,
> -					    OMAP3430ES2_CM_FCLKEN3);
> -		fck_sgx = cm_read_mod_reg(OMAP3430ES2_SGX_MOD,
> -					  CM_FCLKEN);
> -		fck_usbhost = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD,
> -					      CM_FCLKEN);
> -	} else
> -		fck_sgx = cm_read_mod_reg(GFX_MOD,
> -					  OMAP3430ES2_CM_FCLKEN3);
> -	fck_dss = cm_read_mod_reg(OMAP3430_DSS_MOD,
> -				  CM_FCLKEN);
> -	fck_cam = cm_read_mod_reg(OMAP3430_CAM_MOD,
> -				  CM_FCLKEN);
> -	fck_per = cm_read_mod_reg(OMAP3430_PER_MOD,
> -				  CM_FCLKEN);
> -
> -	/* Ignore UART clocks.  These are handled by UART core (serial.c) */
> -	fck_core1 &= ~(OMAP3430_EN_UART1 | OMAP3430_EN_UART2);
> -	fck_per &= ~OMAP3430_EN_UART3;
> -
> -	/* Ignore GPIO clocks.  Handled by GPIO prepare-idle hooks */
> -	fck_per &= ~(OMAP3430_EN_GPIO2 | OMAP3430_EN_GPIO3 |
> -		     OMAP3430_EN_GPIO4 | OMAP3430_EN_GPIO5 | OMAP3430_EN_GPIO6);
> -
> -	if (fck_core1 | fck_core3 | fck_sgx | fck_dss |
> -	    fck_cam | fck_per | fck_usbhost)
> -		return 1;
> -	return 0;
> -}
> -
>  int omap3_can_sleep(void)
>  {
>  	if (!enable_dyn_sleep)
>  		return 0;
>  	if (!omap_uart_can_sleep())
>  		return 0;
> -	if (omap3_fclks_active())
> -		return 0;
>  	if (atomic_read(&sleep_block) > 0)
>  		return 0;
>  	return 1;
> -- 
> 1.5.6.3
>
> --
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